could cackle
Regular verb: cackle - cackled- cackled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could cackle
you could cackle
she could cackle
we could cackle
you could cackle
they could cackle 	I could be cackling
you could be cackling
she could be cackling
we could be cackling
you could be cackling
they could be cackling	I could have cackled
you could have cackled
she could have cackled
we could have cackled
you could have cackled
they could have cackled	I could have been cackling
you could have been cackling
she could have been cackling
we could have been cackling
you could have been cackling
they could have been cackling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't cackle
you couldn't cackle
she couldn't cackle
we couldn't cackle
you couldn't cackle
they couldn't cackle 	I couldn't be cackling
you couldn't be cackling
she couldn't be cackling
we couldn't be cackling
you couldn't be cackling
they couldn't be cackling	I couldn't have cackled
you couldn't have cackled
she couldn't have cackled
we couldn't have cackled
you couldn't have cackled
they couldn't have cackled	I couldn't have been cackling
you couldn't have been cackling
she couldn't have been cackling
we couldn't have been cackling
you couldn't have been cackling
they couldn't have been cackling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I cackle?
could you cackle?
could she cackle?
could we cackle?
could you cackle?
could they cackle? 	could I be cackling?
could you be cackling?
could she be cackling?
could we be cackling?
could you be cackling?
could they be cackling? 	could I have cackled?
could you have cackled?
could she have cackled?
could we have cackled?
could you have cackled?
could they have cackled? 	could I have been cackling?
could you have been cackling?
could she have been cackling?
could we have been cackling?
could you have been cackling?
could they have been cackling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I cackle?
couldn't you cackle?
couldn't she cackle?
couldn't we cackle?
couldn't you cackle?
couldn't they cackle? 	couldn't I be cackling?
couldn't you be cackling?
couldn't she be cackling?
couldn't we be cackling?
couldn't you be cackling?
couldn't they be cackling? 	couldn't I have cackled?
couldn't you have cackled?
couldn't she have cackled?
couldn't we have cackled?
couldn't you have cackled?
couldn't they have cackled? 	couldn't I have been cackling?
couldn't you have been cackling?
couldn't she have been cackling?
couldn't we have been cackling?
couldn't you have been cackling?
couldn't they have been cackling?